Tool for cutting box strapping and the like



July 17. 1928. 1,677,684

5. w. PARSONS TOOL FOR CUTTING BOX STRAPPING AND THE LIKE Filed Nov. 17,1927

Patented July 17, 1928.

UNITED STATES PATENT OFFICE.

STUART w. rAnsoNs. OF NEW BRITAIN, CONNECTICUT, ASSIGNOR To THE STANLEY worms, OF NEW BRITAIN, CoNNECTICUT,TA-CORPORATION OF CONNECTICUT.

TooL FOR CUTTING BOX STEAPPING ND THE LIKE.

Application filed Novemberl'i', 1927, v Serial No. 233,862.

The practice of applying metal straps or hands about bales, boxes or other forms of packages has grown to very large proportions, and it is of importance to protect those who have to handle the straps or the packages to which they are applied from being cut or scratched by sharp corners which would be present if the ends ofthe straps were square or cut on an angle. end, the present invention contemplates an improved tool for cutting or trimming the strap ends to a shape which will avoid personal injury.

The aim of the present invention is to provide an improved, simple and effective tool by means of. which metal straps or metal strips, such as are applied to shipping boxes and the like, may be readily cut to length and at the same time have their ends trimmed, the tools being arranged to give each end of thestrap a curved contour which is free of projections, burrs o-r cor- 11ers so thatanyone handling the strap or applying the same to a box will not be injured thereby.

A further aim of the invention is to pro{ vide a'tool by means of Wl1lC l1' l'/WO strap ends may be cut and trimmed at one operation. I

A further aim of theinvention is to provide an improved tool of this sort which may be very readily manipulated, aud the cutting members of which maybe easily and economically maintained in a sharp condition so that they will make cleancuts.

Other objects will be in part obvious and in part pointed out, more in detail herein!- after. f

The invention accordingly consists in the features of construction, combination of elements and arrangement of parts. which will be exemplified in the construction here inafter set forth and the scope of the application of which will be indicated in the ap.

pended claims. 7

In the accompanying drawings, wherein is shown, for illustrative purposes, one of the embodiments which the present invention may take: Figure 1 is a side elevational view of the Fig. 4 is a horizontal sectional view To this improved tool with portions thereof in seotion;

Fig. 2 is a sectional view taken substantially on line 2-2 of F ig.- 1;

Fig. 3 is a top plan view;

i I v taken substantially on hne 44 of Fig. 1, the dies being omitted;

the bottom of the punch; and

Pg. 6 isa View showing the manner in which, the straps are cut to length and the ends rounded by my improved tool. 1 Referring to the drawings in detail, my

' improved toolhas a head 10 from which extends a handle 11. Pivoted to-the head is a, cooperating handle 12 by means of which the punch 13 is moved up and down in the head! This punch cooperates with a pair of dies 14. The handles arenormally urged apart so as to raise the punch by means ofa spring9. I

The head 10 has a throughvertical opening 10 which is .generally oblong in ross section. Extendinginwardly from the'forward wall of the head is a horizontal slot 15'adapted to receive the strap to be cut. Thelower wall or edge of this slot extends forwardly so as to form a shelf or lip 16 whereby entry of the'strap into the slot is facilitated. The punch 13 is located for sliding movement in grooves or guideways 19 provided in the front and rear walls of the vertical; opening 10'. The lower end of this punch is provided with a semi-Circular recess 17 "at each side so as to form generally semi-circular cutting edges 18. It will Fig. 5 is aperspective view looking at be observed. particularly from Fig. 1,; that the bottom face of the punch is-inclined at an angle to the plane of movement of the punch and to the plane of the dies 14 in order to provide the necessary. rake. This face is flat and is relatively small and, there'- fore, the punch may be readily resharpened' when necessary by merely holding this face of the punch against a grinding wheel.

' Below the slot 15 and extending into the opening 10 are two bosses 25 having at their upper ends generally circular seats in which are mountedjthe respective dies 14. These dies are in the form of flat round disks having radii equal to the radii of the cutting edges 18 of the punch. The dies are located so tnat the space between the same accurately conforms to'the shape of the active face of the punch whereby substantially one-half of the peripheral edge of each die will cooperate with a respective cutting edge 18 of the punch when the latter is lowered. These use, the screw 26 holding that die in place may be loosened somewhat and the die turned 180 thereby bringing the other half of the cutting edge into operative relation to the punch. When the entire upper edge of the die has been worn, the die can be inverted so as to use the edge of the opposite face. When both cutting edges of the die become worn, the die can be very easily removed and sharpened by merely holding the same against a grinding wheel. Thus, these dies have very long lives and the necessity of frequently resharpening the same is avoided.

The operation of the tool will be readily understood from the foregoing description taken in connection with the accompanying drawings. The device may be either employed for trimming the ends of the strap which has already been cut off or for cutting off a strap of the desired length from a roll or strip of metal. It will be observed, particularly from Fig. 6, that when a length of strap is cut off from a coil, the rear end of the cut-off strap, as well as what will now be the forward end of the coiled strip from which the strap has been cut oil", will both be given a round or semi-circular contour. "he punch cuts out a blank 30 of the shape shown in this figure.

It is, of course, understood that while I have described my improved tool in connection with its use for cutting box and similar strapping, the tool has a more general application; as it may be employed for cutting metal strips or metal straps of different kinds for various uses.

As many changes could be made in the ew/zest ahove construction and many apparently.

widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense. I

lt is also to be understood that thejlanguage used in the'following claims is intended to cover all of the generic and speiiic features of the invention herein described and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

I claim as my invention:

1. A tool for cutting box strapping and the like comprising a head having a strap receiving slot, a handle on which said head is carried, a punch mounted for reciproca- 1 place whereby said disk may be angularly adpistable or reversible end for end to bring new cutting edges thereon into play.

2. A tool for cutting box strapping and the like comprising a head having a trans verse strap receiving slot, a handle carrying said head, a pair of dies carried by said head below said slot, a punch provided with a cutting portion corresponding to the space between said dies, said dies and punch being arranged to cut from a strapa piece with semi-circularly concave side edges, and a handle for reciprocating said punch.

3. A tool for cutting box strapping and the like comprising a head having a transverse strap receiving slot, a handle carrying said. head, a pair of dies carried by said head below said slot and eachcomprising a cylindrical disk, screws for adjustably and removably securing said disks in place, a punch having its lower face inclined to the plane of said dies and provided with a cutting portion corresponding to the space between said dies, and a handle pivoted to said head for reciprocating said punch.

STUART w. PARSONS. 

